EP2418155B1 - Canette bouteille metallique - Google Patents

Canette bouteille metallique Download PDF

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Publication number
EP2418155B1
EP2418155B1 EP10761708.6A EP10761708A EP2418155B1 EP 2418155 B1 EP2418155 B1 EP 2418155B1 EP 10761708 A EP10761708 A EP 10761708A EP 2418155 B1 EP2418155 B1 EP 2418155B1
Authority
EP
European Patent Office
Prior art keywords
metal bottle
curl
diameter
wall thickness
degrees
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP10761708.6A
Other languages
German (de)
English (en)
Other versions
EP2418155A4 (fr
EP2418155A1 (fr
Inventor
Masayuki Nakagawa
Osamu Kume
Yoshio Asai
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Takeuchi Press Industries Co Ltd
Original Assignee
Takeuchi Press Industries Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Takeuchi Press Industries Co Ltd filed Critical Takeuchi Press Industries Co Ltd
Priority to EP17175294.2A priority Critical patent/EP3241773A1/fr
Publication of EP2418155A1 publication Critical patent/EP2418155A1/fr
Publication of EP2418155A4 publication Critical patent/EP2418155A4/fr
Application granted granted Critical
Publication of EP2418155B1 publication Critical patent/EP2418155B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
    • B65D1/02—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents
    • B65D1/0207—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents characterised by material, e.g. composition, physical features
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
    • B65D1/02—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents
    • B65D1/0223—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents characterised by shape
    • B65D1/023—Neck construction
    • B65D1/0246—Closure retaining means, e.g. beads, screw-threads

Definitions

  • This invention relates to a metal bottle can in which an easily openable cap is wound and fastened to a mouth part, or a cap is screwed to a male screw portion of the mouth part.
  • a metal bottle can for easy holding, in which the balance of thinning and weight reduction are attained while maintaining the necessary strength.
  • various metal bottle cans in which beer, refreshing liquid etc. is filled are produced and sold in the market, and are used by general consumers.
  • a plate member of aluminum alloy for example, a primitive plate of the thickness 0.5 mm or more of plate material 3104 ⁇ H19 etc. is used.
  • the mouth part, shoulder part; barrel part, and bottom part are integrally formed by drawing processing, necking processing.
  • An easily openable cap opened by pulling a pull tab is wound and fastened to the mouth part of the metal bottle can, or a screw cap which is capable of resealing the mouth part after taking off the seal, is screwed to the mouth part of the meal bottle can for protecting contents.
  • Conventional metal bottle cans have inadequacy of generating buckling in the neck part, the shoulder part or the barrel part, caused by a downward load applied along the can axis, and generating deformation in the mouth part caused by a load applied in the direction of crushing a curl portion.
  • the loads are applied when forming the curl portion in the mouth part of the metal bottle can, when winding and fastening an easily openable cap, or when capping a screw cap.
  • conventional metal bottle cans having the mouth part, shoulder part, or barrel part of which the wall thickness is thick wholly have been manufactured using a thick primitive plate material. In case when the thin primitive plate material is used from the very beginning, the strength of the mouth part, shoulder part, or barrel part will be inadequate.
  • JP 2008 280065 A discloses an easily openable cap for a container according to the preamble of claim 1.
  • the present invention is devised focusing attention on such problems, and is directed to provide a thinned reasonable metal bottle can having a sufficient strength to withstand a load applied when forming a curl portion, a load applied when winding and fastening an easily openable cap, or a load applied when capping a screw cap. More specifically, the present invention is to provide a metal bottle cap in which the mouth part, the neck part, or the barrel part maintains a sufficient strength not to generate deformation, buckling in the manufacturing process or in the filling process of contents, and to provide a metal bottle can being not deformed, being not depressed in each stage of transportation, sale, or consumption as a product, and being easy to hold and easy to handle, while attaining the balance of thinning and weight reduction.
  • the present invention provides a metal bottle can comprising a mouth part having a curl portion at an end, a neck part having a straight portion in parallel to a can axis, a shoulder part having a tapered shape, a barrel part, and a bottom part, wherein the metal bottle can is integrally formed by drawing a primitive plate and an easily openable cap is wound and fastened to the curl portion, and wherein the curl portion has a diameter-contracted portion where the diameter is contracted from the upper end of the mouth part, a standing-up portion extending upward from the upper end of the diameter-contracted portion, an upper flexion portion of the upper end of the standing-up portion, an outward protruded bend portion expanding outward and extending downward smoothly from the upper flexion portion, a lower flexion portion of the lower end of the bend portion, and a straight-line portion extending straightly to the diameter- contracted portion from the lower flexion portion, wherein an angle ⁇ between a straight line portion of the curl portion and the horizontal line is -25 degree to 25 degrees,
  • the metal bottle can of the present invention has an effect to have a sufficient strength to withstand a load applied when forming the curl portion, a load applied when winding and fastening the easily openable cap, or a load applied when capping the screw cap. And, it has an effect to be capable of providing a reasonable metal bottle can at a cheap cost, in which the balance of thinning and weight reduction is attained, while maintaining the strength. Further, it has an effect that it will not deform, or it will not depress in each stage of transportation, sale, or consumption as a product. Further, the metal bottle can of the present invention is easy to hold and easy to handle.
  • a metal bottle can 8 of Figure 1 comprises a cylindrical barrel part 6, a bottom part 7 closing the lower end thereof, a taper-shaped shoulder part 5 formed in the upper end of the barrel part, a cylindrical neck part 4 formed in the upper end of the shoulder part, and a mouth part 1 formed in the upper end of the neck part through a taper portion 4a.
  • a curl portion 2 is formed in the upper end of the mouth part.
  • the curl portion 2 is roughly circular in the shape thereof as shown in Figure 5 , 6 .
  • the curled portion 2 has a diameter-contracted portion 2b where the diameter is contracted from the upper end of the mouth part, a standing-up portion 2c extending upward from the upper end of the diameter-contracted portion, an upper flexion portion 2d of the upper end of the standing-up portion, an outward protruded bend portion 2e expanding outward and extending downward smoothly from the upper flexion portion, a lower flexion portion 2f of the lower end of the bend portion, and a straight-line portion 2a extending straightly to the diameter- contracted portion from the lower flexion portion.
  • the height L of the upper end (lower end of the shoulder part) of the barrel part from the upper end of the mouth part is 40 mm to 100 mm, preferably 50 mm to 86 mm ( Figure 1 ).
  • the wall thickness T of the bottom part is 0.48 mm to 0.30 mm, preferably 0.44 mm to 0.35 mm ( Figure 2 ).
  • the diameter A of the barrel part is 40 mm to 70 mm, preferably 45 mm to 66 mm ( Figure 1 ).
  • the wall thickness W of the barrel part is 0.22 mm to 0.12 mm, preferably 0.19 mm to 0.12 mm ( Figure 2 ).
  • the angle ⁇ of the shoulder part is 40 degrees to 70 degrees, preferably 55 degrees to 62 degrees ( Figure 1 ).
  • the wall thickness Z of the shoulder part is 0.33 mm to 0.20 mm, preferably 0.30 mm to 0.20 mm ( Figure 2 ).
  • the diameter B of the neck part is 10 mm to 40 mm, preferably 22 mm to 29 mm ( Figure 1 ).
  • the wall thickness Y of the neck part is 0.43 mm to 0.30 mm, preferably 0.41 mm to 0.32 mm ( Figure 2 ).
  • the height S of the neck part is 10 mm to 37 mm ( Figure 1 ).
  • the diameter C of the mouth part is 17 mm to 24 mm, preferably 22 mm to 24 mm ( Figure 1 ).
  • the wall thickness X of the mouth part is 0.46 mm to 0.33 mm, preferably 0.44 mm to 0.35 mm ( Figure 2 ).
  • the wall thickness X' of the curl portion is 0.48 mm to 0.35 mm, preferably 0.47 mm to 0.37 mm ( Figure 5 ).
  • the inner diameter D of the curl portion is 22 mm to 17 mm, preferably 20.5 mm to 18.5 mm ( Figure 2 ).
  • the outer diameter E of the curl portion is 28 mm to 26 mm, preferably 26.4 mm to 26.2 mm ( Figure 2 ).
  • the height I of the curl portion is 6.0 mm to 3.0mm, preferably 4.0 mm to 3.5 mm ( Figure 5 ).
  • the width J of the curl portion is 5.0 mm to 2.0 mm, preferably 4.0 mm to 2.8 mm ( Figure 5 ).
  • the diameter C of the mouth part/the diameter B of the neck part x 100 is 65 % to 100 %, preferably 80 % to 100 °/a.
  • the angle cr of the diameter-contracted portion is 25 degrees to 65 degrees, preferably 35 degrees to 50 degrees ( Figure 5 ).
  • the curvature radius R1 of the upper flexion portion is 0.5 mm to 1.0 mm, preferably 0.6 mm to 0.9 mm ( Figure 5 ).
  • the curvature radius R2 of the bend portion is 2.0 mm to 3.0 mm ( Figure 5 ).
  • the curvature radius R3 of the lower flexion portion is 0.5 mm to 1.0 mm ( Figure 5 ).
  • the angle ⁇ of the straight-line portion against a horizontal line is 0 degree to 25 degrees, preferably 0 degree to 5 degrees, the angle ⁇ ' is 0 degree to minus 25 degrees, preferably 0 degree to minus 5 degrees ( Figure 5 ).
  • a metal bottle can 18 of Figure 7 comprises a cylindrical barrel part 16, a bottom part 17 closing the lower end thereof, a taper-shaped shoulder part 15 formed in the upper end of the barrel part, a cylindrical neck part 14 formed in the upper end of the shoulder part, and a mouth part 11 formed in the upper end of the neck part through a taper portion 14a.
  • a curl portion 12 is formed in the upper end of the mouth part.
  • a straight portion 13, a screw portion 11a, and an annular recessed portion 14c are formed in the neck part 14. This is that in which a screwing processing is applied to the neck part of the metal bottle can 1 of Figure 1 .
  • the wall thickness of the screw portion of the metal bottle can 18 is 0.42 mm to 0.32 mm, preferably 0.38 mm to 0.33 mm. Moreover, the wall thickness of the mouth part 11 is 0.45 mm to 0.35 mm, preferably 0.43 mm to 0.37 mm ( Figure 7 ). The other configuration is substantially same as that of the metal bottle can 1 of Figure 1 .
  • a curl portion 12a is roughly semilunar.
  • the curl portion is equipped with a semicircle portion 12c protruding inward from the upper flexion portion, and a planar portion 12b extending from the end portion straightly above and below from the end of the semicircle portion 12c, in place of the bend portion 2e of the curl portion.
  • a protruded portion 12d is formed in the intersecting point of the semicircle portion 12c and the planar portion 12b.
  • the mouth part 11 is also taper-shaped.
  • the metal bottle can of Figure 9 is that in which the straight portion 18 is omitted from the metal bottle can of Figure 7 , and is equipped with a semilunar curl portion 12a of Figure 8 .
  • the metal bottle can of Figure 10 is that in which the neck part and the mouth part are unified, and is that in which the taper portion 4a of Figure 1 is not equipped.
  • the height M of the neck part is 20 mm to 50 mm, preferably 20 mm to 45 mm.
  • the metal bottle can of Figure 11 comprises a cylindrical barrel part 36, a bottom part 37 closing the lower end thereof, a taper-shaped shoulder part 35 formed in the upper end of the barrel part, a cylindrical straight portion 39 formed in the upper end of the shoulder part, a taper-shaped neck part 34 formed in the upper end of the straight portion, and a mouth part 31 formed in the upper end of the neck part.
  • a curl portion 32 is formed in the upper end of the mouth part.
  • Figure 1 is a drawing showing the embodiment 1 of the present invention.
  • a curl portion 2 is formed in the end of the mouth part, and a straight portion 3 in parallel to the can axis is formed down below the mouth part 1 in the neck part.
  • the metal bottle can 8 has a long neck part 4. By the formation of the straight portion 3, the metal bottle 8 becomes easy to hold and easy to handle. And, the mouth part 1, neck part 4, shoulder part 5, barrel part 6, and bottom part 7 are integrally formed.
  • the embodiment 1 is formed by drawing a primitive plate (wall thickness T) having thickness of 0.44mm.
  • the embodiment 1 is formed to have the barrel part with diameter A of 60 mm, the neck part with diameter B of 27 mm and length S of 25 mm, and the shoulder part with the angle ⁇ of 54.5 degrees. Further, the embodiment is formed to have the mouth part with the wall thickness X of 0.43mm, and the straight portion of the neck part with the wall thickness Y of 0.40.
  • the embodiment is formed to have the tapered-shaped shoulder part with a wall thickness Z of 0.29 mm, and the barrel part with the wall thickness W of 0.18 mm.
  • the inventors etc. have found that even if the wall thickness of the barrel part 6 is thinner than that of the curl portion 2 and the neck part 4, the metal bottle can will have sufficient strength to withstand the load, and that the cost will be reduced by thinning.
  • the primitive plate of the wall thickness of 0.40. mm, 0.38 mm, 0.36, mm etc. may be drawing processed. In this case, it goes without saying that the weight reduction and cost reduction are further attained by the using thinner primitive plate and maintains the strength.
  • other than 3104 ⁇ H19, 3004, 3204 etc. may be used as the plate material of aluminum alloy for the present invention,
  • an easily openable cap 10 called maxi cap, rip cap etc. in popular name is wound and fastened to the curl portion 2. If the withstanding strength of the curl portion is insufficient, the curl portion 2 will deforms as shown by the dashed line, because of a pressing force applied to the curl portion 2 when the easily openable cap 10 is wounded and fastened. In such a case, there is a problem that the content leaks from the gap between the curl portion 2 and the easily openable cap 10.
  • the curl portion 2 of the end of the mouth part 1 is formed to be thick with the wall thickness X' of 0.46 mm. The inventors etc.
  • the inventors etc. have specified the range of the wall thickness where it is possible to attain the balance of thinning and weight reduction, while maintaining the strength of the curl portion 2.
  • the specified range of the metal bottle can is that the size B of the neck part 4 is 20 mm to 35 mm, the outer diameter A of the barrel part 6 is 40 mm to 70 mm, the angle ⁇ of the shoulder part is 40 degrees to 70 degrees.
  • the inventors etc. also have focused on the shape of the curl portion 2 itself as much as the. wall thickness X' of the curl portion 2 having strength which withstand the loads.
  • Figure 6 shows the other example of the curl portion 2 which does not deform.
  • a pressure at which the content leaks from the easily openable cap 10 which is wound and fastened to the mouth part 1 of the metal bottle can of the embodiment 1 is 1.2 MPa or more.
  • This configuration makes it possible to prevent a pull tab 10d of the easily openable cap 10 from protruding in a large way from the periphery of the size B of the neck part 4.
  • the tongue piece connecting a skirt portion 10b extending downward from the top face wall 10a of the easily openable cap and a pull tab 10d is closely attached to the annular recessed portion 1a of the mouth part 2 of which the diameter is contracted.
  • a plate material of aluminum alloy for example, the plate material of 3104-H19 is drawing processed first to form a bottomed cylindrical body having a barrel part. After that, necking processing is applied to the opening of the bottomed cylindrical body to form the planned forming portion of a mouth part and neck part having a straight portion. Then, a mouth part is formed by contracting the diameter of the upper portion of the planned forming portion. Next, a curl portion is formed in the end of the mouth part to complete. After a content is filled in the metal bottle can, an easily openable cap is wound and fastened to the curl portion.
  • a metal bottle can having a screw formed in the lower portion of the mouth part of the embodiment 2.
  • the planned forming portion having the mouth part and the neck part having a straight portion is formed.
  • a male screw processing is applied to the planned forming portion beneath the mouth part
  • a curl processing is applied to the end of the mouth part to complete.
  • a cap cylinder body of cylindrical shape is covered on the mouth part, and a male screw is formed in the side face of the cap cylinder body by a screw forming machine.
  • the top face of the planned cap cylinder body is pressed downward in the can axis direction using a pressure block, and a thread cutting roller is pressed around the can along the male screw of the mouth part of the metal bottle can to form a screw cap.
  • Figure 7 is a drawing showing the embodiment 2 of the present invention.
  • a curl portion 12 is formed in the end of a mouth part 11 and a male screw portion 11a is formed beneath the curl portion 12. Moreover, in the lower portion thereof, it has a straight portion 13 in parallel to the can axis. A neck part 14 is formed long. Forming of the straight portion 13 allows easy holding and easy handling of the metal bottle can 18. The point that a mouth part 11, neck part 14 having the straight portion 13, a taper-shaped shoulder part 15, a barrel part 16, and a bottom part 17 are formed by integral molding is same as the embodiment 1.
  • the embodiment 2 is formed by drawing a primitive plate (wall thickness T) having thickness of 0.44mm similar to the embodiment 1.
  • the embodiment 2 is formed to have the barrel part with diameter A of 60 mm, the neck part with diameter B of 27 mm and length L of 20 mm, and the shoulder part with the angle ⁇ of 54.5 degrees. Further, the embodiment 2 is formed to have the mouth part with the wall thickness E of 0.41mm, the screw portion with the wall thickness E' of 0.38 mm, and the straight portion 13 of the neck part 14 with the wall thickness F of 0.37.
  • a semilunar curl portion 12a of which the cross section of the curl portion is not circular as shown in Figure 7 , may be formed.
  • a planar portion 12b is formed in outside periphery thereof, and a semicircular portion 12c is formed from the top of the planar portion 12b to the top face including the inner perimeter of the top face.
  • a protruded portion 12d is formed at the intersecting point of the planar portion 12b and the semicircular portion 12c.
  • this semilunar curl portion 12a exists in the point that, when the mouth part 11 of the metal bottle can 18 is sealed by a screw cap, the protruded portion 12d bites into the packing of the cap, and the surface of the planar portion 12b strongly presses the packing making a firm sealing between the mouth part 11 and the cap. Accordingly, the quality of the content can be held even when a content having inner pressure is filled in.
  • the depression of the screw portion 11a and the shoulder part 15, and the buckling etc. of the barrel part 16 can be prevented by forming the wall thickness G of the taper-shaped shoulder part 15 into 0.28 mm, and the wall thickness H of the barrel part into 0.18 mm, during the thread cutting process of the screw portion 11a of the capping processing where the metal bottle can receives the downward pressure in the can axis of the pressure block of about 1050 N.
  • the balance of thinning and weight reduction can be attained, while maintaining the strength of the mouth part 11 and the screw portion 11a.
  • the inventor has specified the wall thickness of the mouth part 11 and the screw portion 11 of the metal bottle can 18 of this embodiment 2,
  • the metal bottle can 18 of the embodiment 2 is formed to have the tapered-shaped shoulder part with the wall thickness G of 0.33 mm-0.20 mm, and the barrel part with the wall thickness H of 0.22 mm-0.12 mm.
  • the embodiment of Figure 9 shows that the neck part 14 does not have a straight portion in parallel to the can axis. Even when the neck part does not have the straight portion, each size of the mouth part 11, the male screw portion 11a, the neck part 14, and the shoulder part 15, the angle ⁇ , as well as the outer diameter of the mouth part 11 and the neck part 14 with regard to the barrel part 16 are specified so that the metal bottle can 18 is still easy to hold and easy to handle.
  • the metal bottle can 18 of this embodiment having the mouth part 11, the neck part 14, the taper-shaped shoulder part 15, the barrel part. 16, and the bottom part 17 is integrally formed by drawing processing the similar primitive plate (wall thickness T) of the thickness 0.44 mm.
  • the diameter A of the barrel part is 60 mm
  • the outer diameter of the mouth part is 28 mm ( Figure a) or 38 mm ( Figure b)
  • the angle ⁇ of the shoulder part is 54.5 degrees.
  • the wall thickness E of the mouth part is 0.41 mm
  • the wall thickness E' of the screw portion is 0.38 mm.
  • the semilunar curl portion 12a is formed similarly in the end of the mouth part 11 of the metal bottle can 18, and , the male screw portion 11a is formed beneath the curl potion 12a.
  • a planar portion 12b is formed in outside periphery
  • a semicircular portion 12c is formed from the top of the planar portion 12b to the top face including the inner perimeter of the top face.
  • a protruded portion 12d is formed at the intersecting point of the planar portion 12b and the semicircular portion 12c.
  • the wall thickness G of the shoulder part 15 and the wall thickness H of the barrel part are sufficient to withstand the pressure block pressure when in the processing and the buckling when in the thread cutting.
  • Figure 10 is a drawing showing the embodiment 3 of the present invention.
  • the metal bottle can 28 is characterized in that, a curl portion 22 is formed in the end of a mouth part 21, and a neck part 24 having a straight portion 23 in parallel to the can axis is formed to be long.
  • the metal bottle can having the mouth part 21, the neck part 24, a shoulder part 25, a barrel part 26, and a bottom part 27 are integrally formed.
  • the wall thickness of the primitive plate which will be drawing processed, the diameter A of the barrel part 26, the diameter B of the neck part 24, the angle ⁇ of the shoulder part 25, the wall thickness of the mouth part 21, the wall thickness of the neck part 24 are same as those of the embodiment 1.
  • the wall thickness of the taper-shaped shoulder part 25 and the wall thickness of the barrel part 26 are also formed to be same as the embodiment 1.
  • the point different from the embodiment 1 is that the length M of the straight portion of the neck part is 35 mm, and that the diameter of the upper portion of the neck part 24 is not contracted.
  • Figure 11 is a drawing showing the embodiment 4.
  • This metal bottle can 38 is characterized in that, while a curl portion 32 is formed in the end of the mouth part 31, the neck part 34 has a taper shape of angle ß from beneath a mouth part 31 to a shoulder part 35a.
  • the mouth part 31, the neck part 34, a shoulder part 35, a barrel part 36, and a bottom part 37 are integrally formed similarly by drawing processing the primitive plate (wall thickness T) of the thickness 0.44 mm.
  • the diameter A of a barrel part 36 is 60 mm
  • the angle ß of the neck part 34 is 50 degrees to 89 degrees.
  • the wall thickness O of the mouth part is 0.43 mm
  • the wall thickness P of the taper-shaped neck part 34 is 0.40 mm
  • the wall thickness Q of the shoulder part 35 is 0.29 mm
  • the wall thickness U of the barrel part 36 is 0.18 mm.
  • the easily openable cap is wound and fastened to the curl portion 32 to close the mouth part 31.
  • the difference of the embodiment between the Figure (a) and Figure (b) of Figure 11 is that the embodiment of Figure (a) of Figure 11 somewhat has the straight portion 39 in parallel to the can axis between the neck part 34 and the shoulder part 35, but the embodiment of Figure (b) of Figure 11 do not have the straight portion in parallel to the can axis.
  • the embodiment 2, the embodiment 3, and the embodiment 4 is a thinned metal bottle can 18, 28, 38, which has sufficient strength to withstand against a load applied when in forming the curl portion, a load applied when in capping the screw cap, or a load applied when in winding and fastening the easily openable cap.
  • these are reasonable metal bottle cans 18, 28, 38 which have sufficient strength not to generate deformation, buckling of the mouth part, the neck part or the barrel part in the manufacturing, filling process, while the balance of thinning and weight reduction being attained.
  • the metal bottle can of the present invention is a low cost metal bottle can in which the balance of thinning and weight reduction is attained while maintaining the strength. It can be widely used as a container for filling carbonated beverages such as beer, cola etc., refreshing liquids such as juice, tea etc., foods, health drinks, and medicals.

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  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)
  • Closures For Containers (AREA)

Claims (4)

  1. Cannette bouteille métallique comprenant une partie de goulot (1) ayant une partie retroussée (2) à une extrémité, une partie de col (4) ayant une partie droite (3) parallèlement à un axe de cannette, une partie d'épaulement (5) ayant une forme inclinée, une partie de corps (6) et une partie de fond (7),
    où la cannette bouteille métallique est formée intégralement en étirant une tôle primitive et une capsule facilement ouvrable (10) est entourée et fixée à la partie retroussée (2), et
    dans laquelle la partie retroussée (2) possède une partie à diamètre contracté (2b) où le diamètre est contracté par rapport à l'extrémité supérieure de la partie de goulot (1), une partie relevée (2c) s'étendant vers le haut par rapport à l'extrémité supérieure de la partie à diamètre contracté (2b), une partie de flexion supérieure (2d) de l'extrémité supérieure de la partie relevée (2c), une partie courbée dépassant vers l'extérieur (2e) se développant vers l'extérieur et s'étendant en douceur vers le bas à partir de la partie de flexion supérieure (2d), une partie de flexion inférieure (2f) de l'extrémité inférieure de la partie courbée (2e), et une partie droite (2a) s'étendant de manière droite jusqu'à la partie à diamètre contracté (2b) à partir de la partie de flexion inférieure (2f),
    dans laquelle un angle θ entre la partie droite (2a) de la partie retroussée (2) et la ligne horizontale est de -25 degrés à 25 degrés, caractérisée en ce qu'un rayon de courbure R de la partie de flexion inférieure (2f) de la partie retroussée (2) est de 0,5 mm à 1,0 mm,
    une largeur J de la partie retroussée (2) est de 5,0 mm à 2,0 mm,
    une hauteur I de la partie retroussée (2) est de 6,0 mm à 3,0 mm,
    un angle σ de la partie à diamètre contracté (2b) est de 25 degrés à 65 degrés,
    un diamètre A de la partie de corps (6) est de 40 mm à 70 mm,
    un diamètre B de la partie de col est de 20 mm à 35 mm,
    une longueur S de la partie droite (3) de la partie de col (4) est de 10 mm à 37 mm
    un angle α de la partie d'épaulement (5) est de 40 degrés à 70 degrés,
    une épaisseur de paroi X' de la partie retroussée (2) est de 0,48 mm à 0,35 mm,
    une épaisseur de paroi X de la partie de goulot (1) est de 0,46 mm à 0,33 mm et est plus mince que l'épaisseur de paroi X' de la partie retroussée (2),
    et une épaisseur de paroi Y de la partie droite (3) de la partie de col (4) est de 0,43 mm à 0,30 mm.
  2. Cannette bouteille métallique selon la revendication 1, dans laquelle un diamètre extérieur C d'une partie en creux (1a) de la partie de goulot (1) est plus petit qu'un diamètre B de la partie droite (3) de la partie de col (4).
  3. Cannette bouteille métallique selon la revendication 1, dans laquelle un rayon de courbure de la partie de flexion supérieure (2d) de la partie retroussée (2) est de 0,5 mm à 1,0 mm.
  4. Cannette bouteille métallique selon la revendication 1, dans laquelle un rayon de courbure de la partie courbée (2e) de la partie retroussée (2) est de 2,0 mm à 3,0 mm.
EP10761708.6A 2009-04-06 2010-04-06 Canette bouteille metallique Not-in-force EP2418155B1 (fr)

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JP2009091910 2009-04-06
JP2009167686 2009-07-16
JP2009253801 2009-11-05
PCT/JP2010/056267 WO2010117009A1 (fr) 2009-04-06 2010-04-06 Canette bouteille metallique

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EP17175294.2A Division EP3241773A1 (fr) 2009-04-06 2010-04-06 Canette bouteille métallique

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JP5597333B2 (ja) 2014-10-01
EP3241773A1 (fr) 2017-11-08
JP2011116456A (ja) 2011-06-16
KR101746195B1 (ko) 2017-06-12
JP2012192984A (ja) 2012-10-11
KR20120006037A (ko) 2012-01-17
JP5323757B2 (ja) 2013-10-23
CN104029881A (zh) 2014-09-10
EP2418155A4 (fr) 2012-08-22
JP2013227083A (ja) 2013-11-07
US9227748B2 (en) 2016-01-05
EP2418155A1 (fr) 2012-02-15
JP5631449B2 (ja) 2014-11-26
CN102378722A (zh) 2012-03-14
WO2010117009A1 (fr) 2010-10-14
US20120024813A1 (en) 2012-02-02
CN104029881B (zh) 2017-05-03
CN102378722B (zh) 2014-07-16

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